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 /*

  * Copyright 2010 Google Inc.

  *

  * Use of this source code is governed by a BSD-style license that can be

  * found in the LICENSE file.

  */

 #ifndef GrKey_DEFINED

 #define GrKey_DEFINED

 class GrKey : public SkRefCnt {

 public:

     SK_DECLARE_INST_COUNT(GrKey)

     typedef intptr_t Hash;

     explicit GrKey(Hash hash) : fHash(hash) {}

     intptr_t getHash() const { return fHash; }

     bool operator<(const GrKey& rh) const {

         return fHash < rh.fHash || (fHash == rh.fHash && this->lt(rh));

     }

     bool operator==(const GrKey& rh) const {

         return fHash == rh.fHash && this->eq(rh);

     }

 protected:

     virtual bool lt(const GrKey& rh) const = 0;

     virtual bool eq(const GrKey& rh) const = 0;

 private:

     const Hash fHash;

     typedef SkRefCnt INHERITED;

 };

 #endif